| Denver to Idar-Oberstein | 5,011.54 mi (8,065.29 km) |
| Denver to Idstein | 5,019.75 mi (8,078.51 km) |
| Denver to Illertissen | 5,173.89 mi (8,326.57 km) |
| Denver to Illingen | 5,018.21 mi (8,076.03 km) |
| Denver to Ilmenau | 5,083.00 mi (8,180.30 km) |
| Denver to Ilsede | 4,984.84 mi (8,022.33 km) |
| Denver to Ilsenburg | 5,019.24 mi (8,077.69 km) |
| Denver to Ilsfeld | 5,106.67 mi (8,218.40 km) |
| Denver to Ilvesheim | 5,064.26 mi (8,150.14 km) |
| Denver to Immenstadt im Allgau | 5,209.48 mi (8,383.85 km) |
| Denver to Ingelheim | 5,024.01 mi (8,085.36 km) |
| Denver to Ingolstadt | 5,191.67 mi (8,355.19 km) |
| Denver to Iserlohn | 4,946.36 mi (7,960.40 km) |
| Denver to Isernhagen-Sud | 4,966.88 mi (7,993.43 km) |
| Denver to Ismaning | 5,225.80 mi (8,410.11 km) |
